# Prime Power Test Technician Level 2 Practice Exam 2 Of 3 (Technical)

50 Questions | Total Attempts: 957  Settings  Test Technician Level 2 practice exam. 50 questions selected at random. 90 minute time limit. Please allow yourself at least 1 hour to complete the test properly. 70% is passing. You cannot save test and resume later. Good Luck!

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• 1.
The sum of the interior angles of a triangle is :
• A.

360

• B.

120

• C.

180

• D.

90

• 2.
If  X=5 , Y=6, then : XY(X^2 -Y) =                      X times Y times   (X squared minus Y)
• A.

370

• B.

570

• C.

840

• D.

930

• 3.
If a specified value is 120.00 , and the measured value is 124.56, the % error is:
• A.

6.39%

• B.

4.56%

• C.

45.6%

• D.

3.8%

• 4.
One giga unit is equal to:
• A.

1,000

• B.

.001

• C.

100,000

• D.

1,000,000

• E.

1,000,000,000

• 5.
Which formula is correct if : A=100, B= 200, and C= 300
• A.

C=A-B

• B.

C=C+A

• C.

A=B+C

• D.

B=C-A

• 6.
Kilo equals :
• A.

Mega / 1000

• B.

Giga / 100

• C.

Deca x 10

• D.

Mili x 1000

• 7.
If 4000 was the specified value, and 3850 was the mesured value, what is the percent error?
• A.

-.096

• B.

-3.75

• C.

3.90

• D.

1.04

• 8.
Insulation resistance tests sets usually include ___ test connection terminals.
• A.

1

• B.

2

• C.

3

• D.

4

• 9.
With insulation resistance test equipment :
• A.

Leakage current returned by the guard lead are not normally metered

• B.

Leakage current returned by the guard lead passes through the meter

• C.

The guard lead provides stabilizing voltage

• D.

The guard lead must be connected to ground

• 10.
Properly adjusting to the null point of a transformer turns ratio test set :
• A.

Measures the difference between the test set's internal fixed ratio reference transformer and the specimen transformer

• B.

Assures correct test current flow and test voltage

• C.

Is accomplished by changing the adjustable ratio of the test set's reference transformer

• D.

Is accomplished by changing the test set's adjustment dial unil the test set impedence matches the specimen transformer's impedance

• E.

None of the above

• 11.
Typical ground resistance test sets provide :
• A.

3 output current terminals

• B.

3 output voltage terminals

• C.

4 output voltage terminals

• D.

4 output terminals

• E.

None of the above

• 12.
An insulation resistance test set has 3 scales on its meter face. The top scale is 3 to 3k gigohms. The center scale is 30 to 30k megohms. The bottom scale is 3 to 30k kilohms. After selecting the center scale and connecting the leads to a 2300 volt , 500 HP motor, the instrument indicates the lowest reading. You have determined that :
• A.

There are shorted turns in the windings

• B.

The motor insulation is weak

• C.

The value measured should be reported

• D.

The test set is on the wrong scale

• E.

B and D are correct

• 13.
What is indicated when the turns ratio test set is hard to crank and the correct exciting voltage cannot be reached ?
• A.

Incorrect polarity

• B.

Shorted specimen windings

• C.

Open windings

• D.

KVa rating is too large

• E.

A or B

• 14.
Low resistance ohmmeters typically include ____ test connection terminals
• A.

2

• B.

3

• C.

4

• D.

5

• E.

6

• 15.
Winding resistance measurements are performed by using a :
• A.

Megohmeter

• B.

Multimeter

• C.

Low resistance ohmmeter

• D.

Insulation resistance test set

• 16.
Measuring instruments with graduated scales and pointers are referred to as __________ type instruments
• A.

Analog

• B.

Digital

• C.

LED

• D.

Averaging

• E.

Recording

• 17.
Generally, high current test sets:
• A.

Provide controllable high currents at 277/480 volts

• B.

Are 3 phase devices

• C.

Are operated ungrounded

• D.

Provide high test voltages

• E.

Provide high test currents at 10 volts or less

• 18.
Which instrument or test set is LEAST likely to be used during the testing of medium voltage cables
• A.

Megohmmeter

• B.

Ohmmeter

• C.

DC high potential test set

• D.

Voltage detector

• E.

Turns ratio test set

• 19.
A polorization index  test typically requires the use of :
• A.

Voltmeter

• B.

Megohhmeter

• C.

Low resistance ohmmeter

• D.

Power factor test set

• E.

Watt or phase angle meter

• 20.
Insulation power factor test equipment
• A.

Is 3 phase

• B.

Can perform load power factor measurement

• C.

Is frequently used to test transformers

• D.

Measures transformer or feeder power usage

• E.

Verifies power ratings

• 21.
What test equipment is used to test the RTD inputs of a motor protective relay?
• A.

• B.

High current test set

• C.

Relay test set

• D.

Multi-meter

• E.

Megohmmeter

• 22.
Multi-meters can be routinely used to
• A.

Measure resistance between switchgear and building neutrals and ground conductors during maintenance testing of ground faults

• B.

To prove the integrity of bolted bus and cable connections

• C.

To measure phase angle

• D.

All of the above

• E.

None of the above

• 23.
How would you use a VOM rated at 10 amperes maximum to measure a 100 amp load?
• A.

Use the 10A scale

• B.

Use the ohm scale

• C.

Use the volt scale

• D.

Use the mA scale

• E.

Use a current transformer

• 24.
To measure circuit resistance, first
• A.

Zero the ohm scale

• B.

Check for the presence of voltage

• C.

• D.

Check frequency

• 25.
The maximum voltage rating of a multi-meter used without a high voltage probe is typically
• A.

2500 volts RMS, continuous

• B.

2500 volts RMS or dc, continuous

• C.

750-1000 volts RMS, non-continuous

• D.

600 volts peak

• E.

500 volts ac or dc, continuous